Jak przestawiać tabelę za pomocą T-SQL?

Question

Jak przekonwertować tabelę z tego formatu:

Id | Data   |Section 
------------------------------------------ 
1 |1AAA   |AAA 
------------------------------------------ 
1 |1BBB   |BBB 
------------------------------------------ 
1 |1CCC   |CCC 
------------------------------------------ 
2 |2AAA   |AAA 
------------------------------------------ 
2 |2BBB   |BBB 
------------------------------------------ 
2 |2CCC   |CCC 
------------------------------------------ 
3 |3AAA   |AAA 
------------------------------------------ 
3 |3CCC   |CCC 
------------------------------------------ 

do tego formatu z T-SQL?

Id |Column_AAA|Column_BBB|Colunm_CCC| 
------------------------------------- 
1 |1AAA  |1BBB  |1CCC  | 
------------------------------------- 
2 |2AAA  |2BBB  |2CCC  |  
------------------------------------- 
3 |3AAA  |.....  |3CCC  | 

Answer 1

to powinno dać Ci wyniki, które chcesz.

CREATE TABLE #temp 
(
    id int, 
    data varchar(50), 
    section varchar(50) 
) 
insert into #temp values(1, '1AAA', 'AAA') 
insert into #temp values(1, '1BBB', 'BBB') 
insert into #temp values(1, '1CCC', 'CCC') 
insert into #temp values(2, '2AAA', 'AAA') 
insert into #temp values(2, '2BBB', 'BBB') 
insert into #temp values(2, '2CCC', 'CCC') 
insert into #temp values(3, '3AAA', 'AAA') 
insert into #temp values(3, '3BBB', 'BBB') 
insert into #temp values(3, '3CCC', 'CCC') 

select id, [AAA] as Column_AAA, [BBB] as Column_BBB, [CCC] as Column_CCC 
from 
(
    select id, data, section 
    from #temp 
) x 
PIVOT 
(
    max(data) 
    FOR section IN([AAA], [BBB], [CCC]) 
) as p 

drop table #temp 

Wyniki:

id column_AAA column_BBB column_CCC 
1 1AAA  1BBB  1CCC 
2 2AAA  2BBB  2CCC 
3 3AAA  3BBB  3CCC